Food in the entire circulation process, to be transported, loading and unloading, transportation and storage, easy to cause the appearance of food quality damage, food through the inside and outside packaging, it can be very good protection of food, so as not to cause damage.

(2) To protect the original quality of food, prolong the shelf food

Food in the entire circulation process, its quality will be changed and deterioration.

Food itself has a certain amount of nutrients and water, which is bacteria, mildew, yeast and other production and reproduction of the basic conditions, when the food preservation temperature suitable for their reproduction, it causes food spoilage. If food use aseptic packaging or packaging for high-temperature sterilization, refrigeration and other treatment, will prevent the occurrence of food corruption, prolong the shelf food.

At the same time, food itself has a certain amount of water, when these moisture content changes, will lead to food flavor changes or deterioration. If the use of the appropriate moisture-proof packaging technology can prevent the occurrence of these phenomena, but also effectively extend the shelf food.

Again, food in circulation, by sunlight and light direct irradiation, and at high temperature, it is easy to make food oxidation. Discoloration, stale and other phenomena, such as the use of the corresponding vacuum packaging, inflatable packaging technology and corresponding packaging materials. It can also effectively prolong the shelf food.

2 packaged food for easy circulation

Some packaging is a container for food circulation. such as bottled wine, beverages, canned goods, and the field of milk powder, such as packaging bottles, cans and bags are packaging containers. It is also the transfer of food circulation and sales. It brings great convenience to the circulation of food.

3. Increase convenience food varieties, convenient for consumers have convenient food, have local flavor, it only after packaging can be circulated. To make the local famous food exchange, increase people's daily food kind.

Then, fresh food, such as frozen dumplings, packaged meals and preservation technology, can be convenient for people to eat

4. To prevent food pollution convenient cooking food, the use of special packaging technology

Food in circulation, to contact with the container and hand, easy to make food contaminated, after the packaged food can avoid this phenomenon, in favor of the health of consumers.

5. Promote the rationality and planning of food circulation

Some fresh food, easy to corrupt, not easy to transport, such as fruit and aquatic products, made in various cans, can reduce waste, reduce transportation costs, and promote the rationality of food circulation and planning.